Cutter-head



(K0 Model.)

H I. BERTERMA-NN.

Gutter-Head.

No. 227, 07. Patnted May 1 1, 1880.

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N. PETERS. PHOTO-UTHOQRAPH UNITED STATES PATENT Orrrc.

HERMAN I. BERTERMANN, 0F BALTIMORE, MARYLAND.

CUTTER-HEAD.

SPECIFICATION forming part of Letters Patent No. 227,407, dated May 11,1880. Application filed March 18, 1880. (NomodeL) To all whom it mayconcern:

Beit known that I, HERMAN I. BERTERMANN, of Baltimore city, State ofMaryland, have invented certain new and useful Improvements in GutterHeads; and I hereby declare the same to be fully, clearly, and exactlydescribed as follows, reference being had to the accompanying drawings,in which Figure 1 is a perspective view of the device; Fig. 2, a topplan of the same, and Fig. 3 a side elevation of the same. Fig.4 is asectional view, showing the form of groove routed by the particularcutters shown in the other figures.

My invention has reference to that class of cutter-heads used forforming wood rosettes or panel-beads; and it consists in a device of theclass named, constructed and operating as hereinafter set forth, thespecific points of novelty being indicated in the claim.

In the accompanying drawings, A is the boss, to which the cutters G Oare secured, provided with a shank, B, that is attached to the shaft.

The boss is in the form of a truncated pyramid, its sides a atapering-toward the top. The cutters are secured to the sides a, theother sidesbeing provided with grooves 0 adjacent to the cuttlng-edgesof the blades, for the discharge of the chips.

The cutting-edges c of the blades are of any desired outline accordingto the work to be done, the form shown being that of a cymarecta andadapted to form adouble ogee groove, as illustrated in Fig. 4.

The blades are slotted, as shown at d, and are secured to the boss bymeans of screws D and washers e. The bases of the pyramidal sides towhich the cutters are secured are provided with slots 1), the edges boverlapping the blades and preventing the possibility of their flyingout or becoming displaced when the machine is in motion.

The apex of the pyramid is cut away (see Fig. 3) to prevent the chokingof the cutters. In operation, the device is secured to the revolvingshaft of the machine, and the work is brought up to the cutters by anysuitable means.

The peculiar disposition of the blades with.

HERMAN I. BERTERMANN.

Witnesses:

J OHN O. GITTINGER, R. D. WILLIAMS.

